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1.1 root 1: /*
2: * QEMU IDE Emulation: PCI cmd646 support.
3: *
4: * Copyright (c) 2003 Fabrice Bellard
5: * Copyright (c) 2006 Openedhand Ltd.
6: *
7: * Permission is hereby granted, free of charge, to any person obtaining a copy
8: * of this software and associated documentation files (the "Software"), to deal
9: * in the Software without restriction, including without limitation the rights
10: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11: * copies of the Software, and to permit persons to whom the Software is
12: * furnished to do so, subject to the following conditions:
13: *
14: * The above copyright notice and this permission notice shall be included in
15: * all copies or substantial portions of the Software.
16: *
17: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23: * THE SOFTWARE.
24: */
25: #include <hw/hw.h>
26: #include <hw/pc.h>
27: #include <hw/pci.h>
28: #include <hw/isa.h>
29: #include "block.h"
30: #include "sysemu.h"
31: #include "dma.h"
32:
33: #include <hw/ide/pci.h>
34:
35: /* CMD646 specific */
36: #define MRDMODE 0x71
37: #define MRDMODE_INTR_CH0 0x04
38: #define MRDMODE_INTR_CH1 0x08
39: #define MRDMODE_BLK_CH0 0x10
40: #define MRDMODE_BLK_CH1 0x20
41: #define UDIDETCR0 0x73
42: #define UDIDETCR1 0x7B
43:
44: static void cmd646_update_irq(PCIIDEState *d);
45:
1.1.1.6 ! root 46: static uint64_t cmd646_cmd_read(void *opaque, target_phys_addr_t addr,
! 47: unsigned size)
1.1 root 48: {
1.1.1.6 ! root 49: CMD646BAR *cmd646bar = opaque;
1.1 root 50:
1.1.1.6 ! root 51: if (addr != 2 || size != 1) {
! 52: return ((uint64_t)1 << (size * 8)) - 1;
! 53: }
! 54: return ide_status_read(cmd646bar->bus, addr + 2);
! 55: }
! 56:
! 57: static void cmd646_cmd_write(void *opaque, target_phys_addr_t addr,
! 58: uint64_t data, unsigned size)
! 59: {
! 60: CMD646BAR *cmd646bar = opaque;
! 61:
! 62: if (addr != 2 || size != 1) {
! 63: return;
! 64: }
! 65: ide_cmd_write(cmd646bar->bus, addr + 2, data);
! 66: }
! 67:
! 68: static MemoryRegionOps cmd646_cmd_ops = {
! 69: .read = cmd646_cmd_read,
! 70: .write = cmd646_cmd_write,
! 71: .endianness = DEVICE_LITTLE_ENDIAN,
! 72: };
! 73:
! 74: static uint64_t cmd646_data_read(void *opaque, target_phys_addr_t addr,
! 75: unsigned size)
! 76: {
! 77: CMD646BAR *cmd646bar = opaque;
! 78:
! 79: if (size == 1) {
! 80: return ide_ioport_read(cmd646bar->bus, addr);
! 81: } else if (addr == 0) {
! 82: if (size == 2) {
! 83: return ide_data_readw(cmd646bar->bus, addr);
1.1 root 84: } else {
1.1.1.6 ! root 85: return ide_data_readl(cmd646bar->bus, addr);
! 86: }
! 87: }
! 88: return ((uint64_t)1 << (size * 8)) - 1;
! 89: }
! 90:
! 91: static void cmd646_data_write(void *opaque, target_phys_addr_t addr,
! 92: uint64_t data, unsigned size)
! 93: {
! 94: CMD646BAR *cmd646bar = opaque;
1.1 root 95:
1.1.1.6 ! root 96: if (size == 1) {
! 97: return ide_ioport_write(cmd646bar->bus, addr, data);
! 98: } else if (addr == 0) {
! 99: if (size == 2) {
! 100: return ide_data_writew(cmd646bar->bus, addr, data);
! 101: } else {
! 102: return ide_data_writel(cmd646bar->bus, addr, data);
1.1 root 103: }
104: }
105: }
106:
1.1.1.6 ! root 107: static MemoryRegionOps cmd646_data_ops = {
! 108: .read = cmd646_data_read,
! 109: .write = cmd646_data_write,
! 110: .endianness = DEVICE_LITTLE_ENDIAN,
! 111: };
! 112:
! 113: static void setup_cmd646_bar(PCIIDEState *d, int bus_num)
1.1 root 114: {
1.1.1.6 ! root 115: IDEBus *bus = &d->bus[bus_num];
! 116: CMD646BAR *bar = &d->cmd646_bar[bus_num];
! 117:
! 118: bar->bus = bus;
! 119: bar->pci_dev = d;
! 120: memory_region_init_io(&bar->cmd, &cmd646_cmd_ops, bar, "cmd646-cmd", 4);
! 121: memory_region_init_io(&bar->data, &cmd646_data_ops, bar, "cmd646-data", 8);
! 122: }
! 123:
! 124: static uint64_t bmdma_read(void *opaque, target_phys_addr_t addr,
! 125: unsigned size)
! 126: {
! 127: BMDMAState *bm = opaque;
! 128: PCIIDEState *pci_dev = bm->pci_dev;
1.1 root 129: uint32_t val;
130:
1.1.1.6 ! root 131: if (size != 1) {
! 132: return ((uint64_t)1 << (size * 8)) - 1;
! 133: }
! 134:
1.1 root 135: switch(addr & 3) {
136: case 0:
137: val = bm->cmd;
138: break;
139: case 1:
140: val = pci_dev->dev.config[MRDMODE];
141: break;
142: case 2:
143: val = bm->status;
144: break;
145: case 3:
1.1.1.3 root 146: if (bm == &pci_dev->bmdma[0]) {
1.1 root 147: val = pci_dev->dev.config[UDIDETCR0];
148: } else {
149: val = pci_dev->dev.config[UDIDETCR1];
150: }
151: break;
152: default:
153: val = 0xff;
154: break;
155: }
156: #ifdef DEBUG_IDE
157: printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
158: #endif
159: return val;
160: }
161:
1.1.1.6 ! root 162: static void bmdma_write(void *opaque, target_phys_addr_t addr,
! 163: uint64_t val, unsigned size)
1.1.1.3 root 164: {
1.1.1.6 ! root 165: BMDMAState *bm = opaque;
! 166: PCIIDEState *pci_dev = bm->pci_dev;
1.1.1.3 root 167:
1.1.1.6 ! root 168: if (size != 1) {
! 169: return;
! 170: }
1.1.1.3 root 171:
1.1 root 172: #ifdef DEBUG_IDE
173: printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
174: #endif
175: switch(addr & 3) {
1.1.1.3 root 176: case 0:
1.1.1.6 ! root 177: bmdma_cmd_writeb(bm, val);
1.1.1.3 root 178: break;
1.1 root 179: case 1:
180: pci_dev->dev.config[MRDMODE] =
181: (pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30);
182: cmd646_update_irq(pci_dev);
183: break;
184: case 2:
185: bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
186: break;
187: case 3:
1.1.1.3 root 188: if (bm == &pci_dev->bmdma[0])
1.1 root 189: pci_dev->dev.config[UDIDETCR0] = val;
190: else
191: pci_dev->dev.config[UDIDETCR1] = val;
192: break;
193: }
194: }
195:
1.1.1.6 ! root 196: static MemoryRegionOps cmd646_bmdma_ops = {
! 197: .read = bmdma_read,
! 198: .write = bmdma_write,
! 199: };
1.1.1.3 root 200:
1.1.1.6 ! root 201: static void bmdma_setup_bar(PCIIDEState *d)
1.1 root 202: {
1.1.1.6 ! root 203: BMDMAState *bm;
1.1 root 204: int i;
205:
1.1.1.6 ! root 206: memory_region_init(&d->bmdma_bar, "cmd646-bmdma", 16);
1.1 root 207: for(i = 0;i < 2; i++) {
1.1.1.6 ! root 208: bm = &d->bmdma[i];
! 209: memory_region_init_io(&bm->extra_io, &cmd646_bmdma_ops, bm,
! 210: "cmd646-bmdma-bus", 4);
! 211: memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io);
! 212: memory_region_init_io(&bm->addr_ioport, &bmdma_addr_ioport_ops, bm,
! 213: "cmd646-bmdma-ioport", 4);
! 214: memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport);
1.1 root 215: }
216: }
217:
218: /* XXX: call it also when the MRDMODE is changed from the PCI config
219: registers */
220: static void cmd646_update_irq(PCIIDEState *d)
221: {
222: int pci_level;
223: pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
224: !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) ||
225: ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
226: !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
227: qemu_set_irq(d->dev.irq[0], pci_level);
228: }
229:
230: /* the PCI irq level is the logical OR of the two channels */
231: static void cmd646_set_irq(void *opaque, int channel, int level)
232: {
233: PCIIDEState *d = opaque;
234: int irq_mask;
235:
236: irq_mask = MRDMODE_INTR_CH0 << channel;
237: if (level)
238: d->dev.config[MRDMODE] |= irq_mask;
239: else
240: d->dev.config[MRDMODE] &= ~irq_mask;
241: cmd646_update_irq(d);
242: }
243:
244: static void cmd646_reset(void *opaque)
245: {
246: PCIIDEState *d = opaque;
247: unsigned int i;
248:
249: for (i = 0; i < 2; i++) {
250: ide_bus_reset(&d->bus[i]);
251: }
252: }
253:
254: /* CMD646 PCI IDE controller */
255: static int pci_cmd646_ide_initfn(PCIDevice *dev)
256: {
257: PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
258: uint8_t *pci_conf = d->dev.config;
259: qemu_irq *irq;
1.1.1.4 root 260: int i;
1.1 root 261:
1.1.1.3 root 262: pci_conf[PCI_CLASS_PROG] = 0x8f;
1.1 root 263:
264: pci_conf[0x51] = 0x04; // enable IDE0
265: if (d->secondary) {
266: /* XXX: if not enabled, really disable the seconday IDE controller */
267: pci_conf[0x51] |= 0x08; /* enable IDE1 */
268: }
269:
1.1.1.6 ! root 270: setup_cmd646_bar(d, 0);
! 271: setup_cmd646_bar(d, 1);
! 272: pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].data);
! 273: pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].cmd);
! 274: pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].data);
! 275: pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].cmd);
! 276: bmdma_setup_bar(d);
! 277: pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
1.1 root 278:
1.1.1.3 root 279: /* TODO: RST# value should be 0 */
280: pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1
1.1 root 281:
282: irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
1.1.1.4 root 283: for (i = 0; i < 2; i++) {
284: ide_bus_new(&d->bus[i], &d->dev.qdev, i);
285: ide_init2(&d->bus[i], irq[i]);
286:
1.1.1.6 ! root 287: bmdma_init(&d->bus[i], &d->bmdma[i], d);
1.1.1.4 root 288: d->bmdma[i].bus = &d->bus[i];
289: qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
290: &d->bmdma[i].dma);
291: }
1.1 root 292:
1.1.1.3 root 293: vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
1.1 root 294: qemu_register_reset(cmd646_reset, d);
295: return 0;
296: }
297:
1.1.1.6 ! root 298: static int pci_cmd646_ide_exitfn(PCIDevice *dev)
! 299: {
! 300: PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
! 301: unsigned i;
! 302:
! 303: for (i = 0; i < 2; ++i) {
! 304: memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io);
! 305: memory_region_destroy(&d->bmdma[i].extra_io);
! 306: memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport);
! 307: memory_region_destroy(&d->bmdma[i].addr_ioport);
! 308: memory_region_destroy(&d->cmd646_bar[i].cmd);
! 309: memory_region_destroy(&d->cmd646_bar[i].data);
! 310: }
! 311: memory_region_destroy(&d->bmdma_bar);
! 312:
! 313: return 0;
! 314: }
! 315:
1.1 root 316: void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table,
317: int secondary_ide_enabled)
318: {
319: PCIDevice *dev;
320:
321: dev = pci_create(bus, -1, "cmd646-ide");
322: qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled);
323: qdev_init_nofail(&dev->qdev);
324:
325: pci_ide_create_devs(dev, hd_table);
326: }
327:
328: static PCIDeviceInfo cmd646_ide_info[] = {
329: {
330: .qdev.name = "cmd646-ide",
331: .qdev.size = sizeof(PCIIDEState),
332: .init = pci_cmd646_ide_initfn,
1.1.1.6 ! root 333: .exit = pci_cmd646_ide_exitfn,
1.1.1.5 root 334: .vendor_id = PCI_VENDOR_ID_CMD,
335: .device_id = PCI_DEVICE_ID_CMD_646,
336: .revision = 0x07, // IDE controller revision
337: .class_id = PCI_CLASS_STORAGE_IDE,
1.1 root 338: .qdev.props = (Property[]) {
339: DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
340: DEFINE_PROP_END_OF_LIST(),
341: },
342: },{
343: /* end of list */
344: }
345: };
346:
347: static void cmd646_ide_register(void)
348: {
349: pci_qdev_register_many(cmd646_ide_info);
350: }
351: device_init(cmd646_ide_register);
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